<template>
  <h2>这是第二层的组件</h2>
  <three-son></three-son>
  {{title}}
</template>

<script>
import ThreeSon from "./ThreeSon";
export default {
  name: "TwoSon",
  components:{
    ThreeSon
  }
}
</script>

<style scoped>

</style>